https://bugs.freedesktop.org/show_bug.cgi?id=85320
--- Comment #29 from Christian König deathsimple@vodafone.de --- (In reply to Eugene from comment #26)
Linux 3.19RC1. Nothing's changed.
You don't need to test every new kernel version. I'm going to leave a note here if I find time to work on this issue.
On the other hand if you want to get your hands dirty and try a fe things than I can give you dirrections on what could it be (but you need to get into the code yourself).